CN211497737U - Continuous uniform acid leaching device for oxidized ore - Google Patents
Continuous uniform acid leaching device for oxidized ore Download PDFInfo
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- CN211497737U CN211497737U CN201922497296.3U CN201922497296U CN211497737U CN 211497737 U CN211497737 U CN 211497737U CN 201922497296 U CN201922497296 U CN 201922497296U CN 211497737 U CN211497737 U CN 211497737U
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Abstract
The utility model discloses a continuous even acid leaching arrangement of oxidized ore, including a plurality of by preceding leaching tank to back range, all be provided with import and export on every leaching tank, the imported position of every leaching tank is higher than exit position, except being located the leaching tank of rearmost end, all is provided with the connecting pipe in the export of other leaching tanks, the one end of connecting pipe extends to the bottom of preceding leaching tank, the other end of connecting pipe and the access connection of a back leaching tank, and the exit position of preceding leaching tank is higher than the imported position of a back leaching tank, and the top of a plurality of leaching tank is provided with an acid storage tank, and every leaching tank all is connected with acid storage tank through the pipeline, and acid storage tank adds the acidizing fluid volume of each leaching tank and is degressive setting step by preceding after to. By adopting the device, the utility model discloses a continuous even acid leaching of oxidized ore.
Description
Technical Field
The utility model relates to a continuous uniform acid leaching device for oxidized ore, which belongs to the technical field of wet metallurgy.
Background
In hydrometallurgy, the oxidized ore is usually leached into valuable metals by using inorganic acid, the leaching process generally requires that mineral aggregates have certain fineness, and the acidity of ore pulp, the leaching temperature, the leaching time and the stirring rate are controlled within a certain range in the leaching process, so that a better leaching effect is achieved. The control of acidity in the leaching process is the core of the whole leaching reaction, and the acid adding rate is generally adjusted by detecting the pH value of ore pulp in the actual production, but the method has several defects: the ore pulp contains a large proportion of solid particles, so that the ore pulp can seriously interfere and damage on-line electronic measuring equipment such as a pH meter and the like, and the ore pulp has large measuring error and short service life. Secondly, the flow regulating valve is adjusted through the feedback of the pH value signal so as to control the acid liquid adding rate, the flow control is delayed due to the complexity of the leaching process, and the aim of accurate control cannot be achieved. Due to the physical properties of the mineral material and the defects of the device, the continuous leaching process is actually carried out in a continuously fluctuating acidity range, which causes the phenomena of excessive leaching and incomplete leaching in the leaching process. Excessive leaching mainly comprises the steps that excessive acid is added in the local range of ore pulp, so that the local acidity is too high, harmful impurities are leached out, the subsequent impurity removal process is influenced, and auxiliary materials are wasted; the incomplete leaching is that the added acid amount is not enough, the leaching of valuable metals is not up to standard, the loss of the valuable metals is caused, and the exceeding of the valuable metals in waste residues is reported, so that different acid adding rates are controlled in different time periods according to the characteristics of the reaction of different mineral aggregates and acid in the continuous leaching process, and the stable and orderly performance of the whole leaching process is particularly important.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a continuous uniform acid leaching device for oxidized ore.
In order to realize the above-mentioned purpose, the utility model provides a continuous even acid leaching device of oxidized ore, including a plurality of by preceding leaching tank to back range, all be provided with import and export on every leaching tank, the imported position of every leaching tank is higher than exit position, except being located the leaching tank of rearmost end, all is provided with the connecting pipe in the export of other leaching tanks, the one end of connecting pipe extends to the bottom of preceding leaching tank, the other end of connecting pipe and the access connection of the leaching tank of back, and the exit position of preceding leaching tank is higher than the imported position of the leaching tank of back, and the top of a plurality of leaching tank is provided with an acid storage tank, and every leaching tank all is connected with acid storage tank through the pipeline, and the acidizing fluid volume that acid storage tank added each leaching tank is by preceding to the back progressively diminishing setting step by step.
The utility model has the advantages that: by adopting the arrangement, mineral materials or ore pulp dissolved by the mineral materials enter the leaching tank positioned at the forefront end through the inlet of the leaching tank positioned at the forefront end, and because the inlets and the outlets of the leaching tanks are correspondingly arranged and the drainage of the connecting pipe is carried out, the reacted materials automatically overflow from the leaching tank positioned at the forefront end to the next leaching tank through the connecting pipe, and so on until the materials enter the leaching tank positioned at the rearmost end, in the process, acid liquor in the acid storage tank is continuously added into each leaching tank according to a set amount, namely, the required acid quantity is added into each leaching tank in a step-by-step decreasing mode according to a certain proportion through calculation in advance, the set principle of adding the acid quantity is based on that oxidized ore and acid reaction have a definite chemical reaction equation, namely, the acid quantity required by the oxidized ore leaching has a corresponding relation with the quality of the mineral materials, and the leaching reaction rate has a positive correlation with the concentration of the mineral materials and the acid concentration, and the reaction time of the mineral aggregate in each leaching tank is basically equal. Based on the method, the whole leaching process is cut in equal sections according to time, the required acid amount is added in a step-by-step decreasing mode according to a certain proportion, and the problems of partial excessive leaching, incomplete leaching and the like can be effectively avoided. In conclusion, in above-mentioned, in-process, the ore pulp after mineral aggregate or mineral aggregate dissolve can be sent into continuously through the conveyer belt and be located the leaching tank of foremost, then move to the leaching tank of back step by step after by preceding, store up the acid tank at this in-process and continue to add the acidizing fluid toward each leaching tank in according to the settlement proportion, compare the tradition at whole reaction sequence, people need each leaching tank of real-time detection in reaction solution's pH value and whether take into account to add the acid, the utility model discloses a whole process need not the regulation just can continuously go on, and in this continuous leaching reaction sequence, the utility model discloses effectively ensured that each leaching tank all maintains even acid state basically, and then effectively avoided appearing excessively leaching and leaching incomplete scheduling problem.
The utility model discloses can further set up to still including the acidizing fluid supply tube toward storing up the acid tank in acidification, be provided with into sour valve on the acidizing fluid supply tube, store up the acid tank in and be provided with the sensor that is used for detecting its interior liquid level, sensor and the valve signal connection that advances, be provided with out sour house steward on storing up the acid tank, be provided with out sour valve on the play sour house steward, every leaches the inslot and all immediately is equipped with an acidification pipe, is provided with a collecting tank between every double-phase adjacent acidification pipe, a plurality of the same exports of size have been seted up to the collecting tank, and wherein most exports assemble and be connected to the last acidification pipe, and remaining part export is connected with the next collecting tank, and wherein the remaining part export that is located the collecting tank of rearmost end is connected with the acidification pipe that is located the rearmost end, and the import that is located the collecting tank of forem.
The acid storage tank is provided with the sensor, the sensor can feed back a signal to the acid inlet valve along with the outflow of acid liquor in the acid storage tank, so that the acid inlet valve is opened to supplement the acid liquor into the acid storage tank, the supply of the acid liquor in the acid storage tank is effectively ensured, the inlet and outlet of the acid liquor in the acid storage tank are basically balanced, the stability of adding the acid liquor into each leaching tank is further improved, and the accurate and stable reaction is ensured. And meanwhile, the acid liquor in the acid storage tank flows into the liquid collecting tank positioned at the foremost end through the acid outlet main pipe, most of the acid liquor directly flows into the previous leaching tank through the previous acid adding pipe according to a set proportion, the rest of the acid liquor flows into the next liquid collecting tank, and the liquid collecting tank divides the acid liquor into two parts to flow out, and the like, so that the acid quantity is gradually reduced according to a certain proportion and is put into each leaching tank.
The utility model discloses can further set up to the spiral pipe is set to the part that the acidification pipe is located the leaching tank, and evenly distributed has a plurality of acidizing fluid exports on the spiral pipe, and a plurality of acidizing fluid exports top-down aperture crescent on the spiral pipe. This arrangement allows the acid solution to be added more uniformly to the reaction solution.
The utility model discloses still can further set up as be provided with agitating unit in the leaching tank, agitating unit includes the (mixing) shaft, sets up at the epaxial blade of stirring and is used for driving the rotatory motor of (mixing) shaft, the spiral pipe is around establishing outside (mixing) shaft and blade. By stirring, the acid solution is more uniformly and rapidly mixed into the reaction solution.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
Detailed Description
As shown in figures 1 and 2, the continuous acid homogenizing leaching device for the oxidized ore comprises a plurality of leaching tanks 1 which are arranged from front to back, wherein each leaching tank 1 is provided with an inlet 11 and an outlet 12, the position of the inlet 11 of each leaching tank is higher than the position of the outlet 12, except the leaching tank 1 at the rearmost end, the outlets 12 of other leaching tanks 1 are all provided with a connecting pipe 13, one end of the connecting pipe 13 extends to the bottom of the previous leaching tank 1, the other end of the connecting pipe 13 is connected with the inlet 11 of the next leaching tank 1, and the outlet 12 of the previous leaching tank 1 is higher than the inlet 11 of the next leaching tank 1, an acid storage tank 2 is arranged above the leaching tanks 1, each leaching tank 1 is connected with the acid storage tank 2 through a pipeline, and the amount of acid liquor added into each leaching tank 1 by the acid storage tank 2 is gradually reduced from front to back.
By adopting the arrangement, mineral materials or mineral pulp dissolved by the mineral materials enter the leaching tank 1 at the forefront end through the inlet 11 of the leaching tank 1 at the forefront end, and due to the corresponding arrangement of the positions of the inlet 11 and the outlet 12 of each leaching tank and the drainage of the connecting pipe 13, the reacted materials automatically overflow from the leaching tank 1 at the forefront end to the next leaching tank 1 through the connecting pipe, and so on until the materials enter the leaching tank 1 at the rearmost end, in the process, acid liquor in the acid storage tank 2 is continuously added into each leaching tank 1 according to a set quantity, namely, the required acid quantity is added into each leaching tank 1 in a step-by-step decreasing mode according to a certain proportion through calculation in advance, the setting principle of adding acid quantity is based on the definite chemical reaction equation of oxidized ore and acid reaction, namely, the acid quantity required by the oxidized ore leaching has a corresponding relation with the quality of the mineral materials, the leaching reaction rate is positively correlated with the concentration of the mineral materials and the acid concentration in a system, while the reaction time of the mineral aggregates in each leaching tank 1 is substantially equal. Based on the method, the whole leaching process is cut in equal sections according to time, the required acid amount is added in a step-by-step decreasing mode according to a certain proportion, and the problems of partial excessive leaching, incomplete leaching and the like can be effectively avoided. In conclusion, in the above-mentioned process, the ore pulp after mineral aggregate or mineral aggregate dissolve can be sent into continuously through the conveyer belt and be located the leaching tank 1 of foremost, then move to the leaching tank 1 of back step by preceding to back, store up acid tank 2 at this in-process and continue to add the acidizing fluid in each leaching tank 1 according to the settlement proportion, compare the tradition in whole reaction sequence, people need real-time detection each leach the interior reaction solution's of 1 PH value of groove and whether consider to add the acid, the utility model discloses an entire process need not the regulation just can continuously go on, and in this continuous leaching reaction sequence, the utility model discloses effectively ensured that each leaching tank 1 all maintains at even acid state basically, and then effectively avoided appearing excessively leaching and leaching incomplete scheduling problem.
The utility model also comprises an acid liquor supply pipe 4 for adding acid into the acid storage tank 2, an acid inlet valve 41 is arranged on the acid liquor supply pipe 4, a sensor 42 for detecting the liquid level in the acid storage tank 2 is arranged in the acid storage tank, the sensor 42 is in signal connection with the acid inlet valve 41, the acid storage tank 2 is provided with an acid outlet main pipe 21, the acid outlet main pipe 21 is provided with an acid outlet valve 22, each leaching tank 1 is internally provided with an acid adding pipe 3, a liquid collecting tank 5 is arranged between every two adjacent acid adding pipes 3, the liquid collecting tank 5 is provided with a plurality of outlets with the same size, wherein most of the outlets are converged and connected to the previous acid adding pipe 3, the rest part of the outlets are connected with the next liquid collecting tank 5, wherein the remaining small part of the outlet of the rearmost sump 5 is connected to the rearmost acid addition pipe 3, and the inlet of the foremost sump 5 is connected to the acid outlet manifold 21.
With the arrangement, as the acid liquor in the acid storage tank 2 flows out, the sensor 42 can feed back a signal to the acid inlet valve 41, so that the acid inlet valve 41 is opened to supplement the acid liquor into the acid storage tank 2, thereby not only effectively ensuring the supply of the acid liquor in the acid storage tank 2, but also keeping the balance of the inlet and outlet of the acid liquor in the acid storage tank 2, further improving the stability of adding the acid liquor into each leaching tank 1, and ensuring the accurate and stable reaction. Meanwhile, the acid liquor in the acid storage tank 2 flows into the liquid collecting tank 5 positioned at the foremost end through the acid outlet main pipe 21, most of the acid liquor directly flows into the previous leaching tank 1 through the previous acid adding pipe 3 according to a set proportion, the rest of the acid liquor flows into the next liquid collecting tank 5, and then the liquid collecting tank 5 divides the acid liquor into two parts to be discharged, and so on, so that the acid quantity is gradually reduced into the leaching tanks 1 according to a certain proportion.
The number of leaching tanks 1 is generally 3 to 7, and the acid addition amount in each leaching tank 1 can be set as shown in the following table.
Based on the parameters in the table above, that is, 80% of the acid solution in each liquid collecting tank 5 flows to the previous acid adding pipe 3, and the remaining 20% of the acid solution flows to the next liquid collecting tank 5, specifically, 5 outlets (51, 52, 53, 54, 55) with the same size may be provided on the liquid collecting tank 5, wherein the acid solution flowing out of the outlets (51, 52, 53, 54) is collected in the previous acid adding pipe 3, the acid solution flowing out of the outlet 55 flows to the next liquid collecting tank 5, and the other liquid collecting tanks 5 may also be similarly provided, so that the acid solution can be fed into each leaching tank 1 in a manner of gradually decreasing the acid solution according to the required ratio. The specific acid amount ratio is set by calculation in advance based on the reaction formula.
The part of the acid adding pipe 3 positioned in the leaching tank 1 is arranged into a spiral pipe 31, a plurality of acid liquor outlets are uniformly distributed on the spiral pipe 31, and the aperture of the acid liquor outlets on the spiral pipe 31 is gradually increased from top to bottom. This arrangement allows the acid solution to be added more uniformly to the reaction solution.
Be provided with agitating unit in the leaching tank 1, agitating unit includes (mixing) shaft 6, sets up blade 7 on (mixing) shaft 6 and is used for driving the rotatory motor 8 of (mixing) shaft 6, spiral pipe 31 is around establishing outside (mixing) shaft 6 and blade 7. By stirring, the acid solution is more uniformly and rapidly mixed into the reaction solution.
Claims (4)
1. The utility model provides a continuous even acid leaching arrangement of oxidized ore, includes a plurality of by preceding leaching tank to back range, all is provided with import and export on every leaching tank, its characterized in that: the import position of every leaching tank is higher than exit position, except that being located the leaching tank of rearmost end, all is provided with the connecting pipe in the export of other leaching tanks, the one end of connecting pipe extends to the bottom of preceding leaching tank, the other end of connecting pipe and the access connection of the last leaching tank, and the exit position of preceding leaching tank is higher than the import position of the last leaching tank, and the top of a plurality of leaching tank is provided with an acid storage tank, and every leaching tank all is connected with acid storage tank through the pipeline, and the acidizing fluid volume that the acid storage tank added each leaching tank is by preceding to be the degressive setting step by step after to.
2. The apparatus for continuous homogeneous acid leaching of oxidized ore according to claim 1, wherein: the acid leaching device is characterized by further comprising an acid liquid supply pipe for adding acid into the acid storage tank, an acid inlet valve is arranged on the acid liquid supply pipe, a sensor for detecting the liquid level in the acid storage tank is arranged in the acid storage tank, the sensor is in signal connection with the acid inlet valve, an acid outlet main pipe is arranged on the acid storage tank, an acid outlet valve is arranged on the acid outlet main pipe, an acid adding pipe is vertically arranged in each leaching tank, a liquid collecting tank is arranged between every two adjacent acid adding pipes, a plurality of outlets with the same size are formed in the liquid collecting tank, most of the outlets are connected to the previous acid adding pipe in a gathering mode, the remaining small part of the outlets are connected with the next liquid collecting tank, the remaining small part of the outlets of the liquid collecting tank located at the rearmost end is connected with the acid adding pipe located at the rearmost end, and the inlets of the liquid collecting tank located.
3. The apparatus for continuous homogeneous acid leaching of oxidized ore according to claim 2, wherein: the acid adding pipe is arranged into a spiral pipe at the part positioned in the leaching tank, a plurality of acid liquor outlets are uniformly distributed on the spiral pipe, and the aperture of the acid liquor outlets on the spiral pipe is gradually increased from top to bottom.
4. The apparatus for continuous homogeneous acid leaching of oxidized ore according to claim 3, wherein: be provided with agitating unit in the leaching tank, agitating unit includes the (mixing) shaft, sets up at the epaxial blade of (mixing) and is used for driving the rotatory motor of (mixing) shaft, the spiral pipe is around establishing outside (mixing) shaft and blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922497296.3U CN211497737U (en) | 2019-12-31 | 2019-12-31 | Continuous uniform acid leaching device for oxidized ore |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922497296.3U CN211497737U (en) | 2019-12-31 | 2019-12-31 | Continuous uniform acid leaching device for oxidized ore |
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| CN211497737U true CN211497737U (en) | 2020-09-15 |
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| CN201922497296.3U Active CN211497737U (en) | 2019-12-31 | 2019-12-31 | Continuous uniform acid leaching device for oxidized ore |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964902A (en) * | 2019-12-31 | 2020-04-07 | 温州大学 | Continuous uniform acid leaching device for oxidized ore |
| CN113088687A (en) * | 2021-04-15 | 2021-07-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Horizontal agitating unit suitable for vanadium slag leaches in succession |
| CN113578235A (en) * | 2021-07-30 | 2021-11-02 | 福建常青新能源科技有限公司 | Production device of nickel sulfate solution |
-
2019
- 2019-12-31 CN CN201922497296.3U patent/CN211497737U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964902A (en) * | 2019-12-31 | 2020-04-07 | 温州大学 | Continuous uniform acid leaching device for oxidized ore |
| CN113088687A (en) * | 2021-04-15 | 2021-07-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Horizontal agitating unit suitable for vanadium slag leaches in succession |
| CN113578235A (en) * | 2021-07-30 | 2021-11-02 | 福建常青新能源科技有限公司 | Production device of nickel sulfate solution |
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